diff --git a/lib/request.js b/lib/request.js
index 084fe26b..3cde8fbb 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -1,6 +1,6 @@
 'use strict'
 
-const crypto = require('crypto')
+const createHash = require('create-hash')
 let captureStackTrace = () => {}
 if (process.env.NODE_DEBUG === 'hafas-client') {
 	captureStackTrace = require('capture-stack-trace')
@@ -9,7 +9,7 @@ const {stringify} = require('query-string')
 const Promise = require('pinkie-promise')
 const {fetch} = require('fetch-ponyfill')({Promise})
 
-const md5 = input => crypto.createHash('md5').update(input).digest()
+const md5 = input => createHash('md5').update(input).digest()
 
 const request = (profile, data) => {
 	const body = profile.transformReqBody({lang: 'en', svcReqL: [data]})
diff --git a/package.json b/package.json
index d654d719..7ab50742 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "hafas-client",
 	"description": "JavaScript client for HAFAS public transport APIs.",
-	"version": "2.7.2",
+	"version": "2.7.3",
 	"main": "index.js",
 	"files": [
 		"index.js",
@@ -34,6 +34,7 @@
 	"dependencies": {
 		"@mapbox/polyline": "^1.0.0",
 		"capture-stack-trace": "^1.0.0",
+		"create-hash": "^1.2.0",
 		"fetch-ponyfill": "^6.0.0",
 		"gps-distance": "0.0.4",
 		"lodash": "^4.17.5",